3 files changed, 6 insertions, 0 deletions
diff --git a/include/cppunit/XmlOutputterHook.h b/include/cppunit/XmlOutputterHook.h
index 4a2de7e..5ded3b1 100644
--- a/include/cppunit/XmlOutputterHook.h
+++ b/include/cppunit/XmlOutputterHook.h
@@ -153,6 +153,8 @@ public:
    */
   virtual void statisticsAdded( XmlDocument *document,
                                 XmlElement *statisticsElement );
+
+  virtual ~XmlOutputterHook() {}
 };
 
 
diff --git a/include/cppunit/extensions/TestFixtureFactory.h b/include/cppunit/extensions/TestFixtureFactory.h
index 1e3e803..45354c6 100644
--- a/include/cppunit/extensions/TestFixtureFactory.h
+++ b/include/cppunit/extensions/TestFixtureFactory.h
@@ -18,6 +18,8 @@ class TestFixtureFactory
 public:
   //! Creates a new TestFixture instance.
   virtual TestFixture *makeFixture() =0;
+
+  virtual ~TestFixtureFactory() {}
 };
 
 
diff --git a/include/cppunit/plugin/TestPlugIn.h b/include/cppunit/plugin/TestPlugIn.h
index 5692fa3..1c9b929 100644
--- a/include/cppunit/plugin/TestPlugIn.h
+++ b/include/cppunit/plugin/TestPlugIn.h
@@ -92,6 +92,8 @@ struct CppUnitTestPlugIn
    * unregistered.
    */
   virtual void uninitialize( CPPUNIT_NS::TestFactoryRegistry *registry ) =0;
+
+  virtual ~CppUnitTestPlugIn() {}
 };